Add 'request' module as a dependency

`ms-rest-azure` uses `request` module, the `request` module is not
found if not installed locally in `node_modules`.

package.json

@@ -99,6 +99,7 @@
     "react-notification-system": "^0.2.15",
     "react-router-dom": "^4.2.2",
     "react-tooltip": "^3.10.0",
+    "request": "^2.88.0",
     "require-without-cache": "^0.0.6",
     "rimraf": "^2.6.2",
     "styled-components": "2.2.0",

yarn.lock

@@ -8406,7 +8406,7 @@ request@2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.0.0"
 
-request@2.88.0, request@^2.87.0:
+request@2.88.0, request@^2.87.0, request@^2.88.0:
   version "2.88.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.0.tgz#9c2fca4f7d35b592efe57c7f0a55e81052124fef"
   integrity sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==